Barry Molloy believes that Derry City's European fate this season rests on Trabzonspor's shaky defence.
Although the Candy Stripes go into Thursday's second leg two goals behind the Turkish giants, they remain in the tie thanks to away goals scored by Davy McDaid and Paddy Kavanagh.
The fact that Derry City came within inches of adding a third in the closing stages of last week's game has strengthened the belief at the Brandywell the Trabzonspor defence is fallible, and Molloy is keen to test that theory to the full.
"We were a bit surprised because they are a top side but when we got at them and when we broke at them from midfield we caused them problems, especially at the back," he said.
"I think that's where there weakness is and that's where we have to try and exploit."
In recent seasons, the Brandywell surface has been the great equaliser in European ties, with IFK Gothenburg, Gretna, Paris St. Germain, FC Pyunik, Skonto Riga and CSKA Sofia all failing to win in Derry. Add in a vociferous Brandywell support and Molloy is confident that the Turks will be in for a tough time come Thursday.
"We have home advantage and they'll not fancy playing on our pitch because they will be used to their more glamorous surroundings. They are a very good side but out there we scored two goals against a defence that we don't think is the best. We have to be positive and try to get the first goal.
"We've had some great results in the past; even against Paris St. Germain we were unlucky not to get a penalty and take a 1-0 lead to Paris. We've played against high calibre teams before and this is no different but we will really have to be on our game to come out of this with a victory."